Simple script to determine top processes consuming cpu.

diagnose.ps1

while($true) {
    Clear-Host
    Write-Host "--- TOP 15 PROCESSES (CPU USAGE) ---" -ForegroundColor Cyan
    Get-Process | Sort-Object CPU -Descending | Select-Object -First 15 -Property Name, Id, @{Name="CPU(s)";Expression={$_.CPU}}, @{Name="RAM(MB)";Expression={[math]::Round($_.WorkingSet / 1MB, 2)}} | Format-Table -AutoSize

    Write-Host "`n--- ACTIVE NETWORK CONNECTIONS ---" -ForegroundColor Yellow
    Get-NetTCPConnection -State Established | Select-Object LocalAddress, LocalPort, RemoteAddress, RemotePort, 
    @{Name="Process";Expression={(Get-Process -Id $_.OwningProcess -ErrorAction SilentlyContinue).Name}}, 
    @{Name="PID";Expression={$_.OwningProcess}} | Select-Object -First 10 | Format-Table -AutoSize

    Write-Host "`n[Press Ctrl+C to Exit] - Refreshing every 3 seconds..." -ForegroundColor Gray
    Start-Sleep -Seconds 3
}